1217560

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:571

約数の個数: 32

約数和(自身を含む): 2790000

約数和(自身を除く): 1572440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 499, 610, 998, 1220, 1996, 2440, 2495, 3992, 4990, 9980, 19960, 30439, 60878, 121756, 152195, 243512, 304390, 608780, 1217560]

約数ペア:

[(1, 1217560), (2, 608780), (4, 304390), (5, 243512), (8, 152195), (10, 121756), (20, 60878), (40, 30439), (61, 19960), (122, 9980), (244, 4990), (305, 3992), (488, 2495), (499, 2440), (610, 1996), (998, 1220)]